学科：地球化学 词目：初始铅 英文：initial lead 释文：初始铅指的是矿物和岩石结晶时进入到矿物和岩石中的铅，其铅同位素组成等于原始铅同位素组成加上从地球形成到矿物、岩石结晶时这段时间内所结累起来的放射成因的铅。
沥青铀矿中的初始铅属地壳放射成因。
The initial lead in pitchblende belongs to radioactive origin from crust.
还介绍了铅晶体蓄电池的初始市场和发展前景。
The initial market and prospect of lead crystal storage cells...
硫、铅同位素和锇同位素初始比值显示，成矿物质主要来自含矿侵入岩体，但是也有其它来源。
Sulfur and lead isotopic features and initial OS values suggest that the ore-forming materials were mainly derived from the host quartz diorite and granodiorite.
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